To illustrate these two ideas we will describe the monstrous moonshine picture \(\mathfrak {M}\)  which is the finite full subgraph of the big picture on the number-like classes needed to describe all 171 moonshine groups of [1]}. As a warm-up, take John McKay's \(E_8\) -observation on the monster conjugacy classes:
\(@=.4cm{& & & & & 3C @{-}[d] & & \\1A @{-}[r] & 2A @{-}[r] & 3A @{-}[r] & 4A @{-}[r] & 5A @{-}[r] & 6A @{-}[r] & 4B @{-}[r] & 2B}\) 
